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Joined: Jun 2003
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Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Jun 2003
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I mounted a straight tubed Vortex Strike Eagle on my flat top (picatinny rail) Colt AR using a "riser" in order to get over the front sight (yes I know it "disappears"at higher magnifications). So placing the scope on 1X, I more or less centered the X hairs so they sit just atop the front sight post (I don't have a laser boresighter), so my question is; can I expect to at least be on paper at 25 yards and if so, high or low? Thanks in advance.
A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Joined: May 2007
Posts: 14,654
Campfire Outfitter
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Campfire Outfitter
Joined: May 2007
Posts: 14,654 |
I tried shooting irons through a variable optic once and could see the irons and target, but was off paper at 25.
your flippant remarks which you so adeptly sling
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Joined: Jun 2003
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Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Jun 2003
Posts: 42,636 Likes: 2 |
OK, thanks. Hoping I'm close.
A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Joined: Jan 2005
Posts: 57,494
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2005
Posts: 57,494 |
Bore sighting an AR is so easy. Just do it and call it good. And I don't use anything but the bore to bore sight.... even did it on thermal scopes and it works with them.
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
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Joined: Jun 2003
Posts: 42,636 Likes: 2
Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Jun 2003
Posts: 42,636 Likes: 2 |
A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Joined: Nov 2006
Posts: 10,189
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,189 |
How tall is the riser? How tall are the mounts?
There’s about a million threads here that talk about mounting a scope on an AR by using a cantilever type mount instead of using rings and risers.
There’s so many variables in your question, it is impossible to answer.
With the 30mm tube any of the 1.4” mounts like an ADM Recon or LaRue LT 104 will put the crosshairs above your front sight post but if you want it to be higher, you’ll need at least a 1.93” mount. Any higher than that and you’ll be shooting with a chin weld.
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Joined: Apr 2017
Posts: 1,365
Campfire Regular
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Campfire Regular
Joined: Apr 2017
Posts: 1,365 |
Centering it on the front sight will not guarantee it's on paper at 25 yards. That would only apply if the center of optic is exactly in the same plane as the imaginary line between the rear and front sight.
You can easily bore sight it at home. Take the bolt and charging handle out of the gun. Rest the rifle firmly on a set of sand bags or similar. Look through the barrel from the breach end and center an inanimate object about 100 yards away in the center of the barrel. Do not move the rifle. Look through the scope and adjust the cross hairs so they are centered on the same inanimate object. To move the cross hairs right, you'll have to turn the windage turret left (it's backwards from a typical sight in procedure.) You'll figure it out. Just get the cross hairs centered on the same object as what's visible in the barrel. Reassemble the gun and you're bore sighted.
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Joined: Jul 2015
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Campfire Outfitter
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Campfire Outfitter
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I'd take the scope off and break out the sawzall on the front tower, then put the scope back on.
Politics is War by Other Means
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Joined: Jun 2003
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Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Jun 2003
Posts: 42,636 Likes: 2 |
.92" height on the mount Weaver medium skeleton mounts. I am well aware on how to bore sight it, I was just looking for someone who had a more or less rig and their experiences.
A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Joined: Nov 2006
Posts: 10,189
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,189 |
.92 plus the mount? Or .92 to center of scope?
Either way the center of the scope needs to be 1.4” high to clear the post.
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Joined: Sep 2006
Posts: 23,659 Likes: 1
Campfire Ranger
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Campfire Ranger
Joined: Sep 2006
Posts: 23,659 Likes: 1 |
Bore sight as rost495 said, rock on, takes 5 minutes, including pinning up the target.
MM
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Joined: Aug 2010
Posts: 48,208 Likes: 23
Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2010
Posts: 48,208 Likes: 23 |
Bore sight as rost495 said, rock on, takes 5 minutes, including pinning up the target.
MM Bore sighting and sighting in are simple as fuq. I'm surprised more people don't do it... Just sayin
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
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Joined: Aug 2005
Posts: 15,698 Likes: 4
Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,698 Likes: 4 |
I don't see why not. But you'll want to zero the irons and the optic separately because due to possible imperfections in your optic mounting system verses the irons, they might not co-witness.
I recently mounted a PA prism ACSS on mine and without mechanical zeroing or otherwise messing with the adjustments it was only 6" low and 3" L at 50yrds. I just walked it in with PMC Bronze FMJ and fine tuned with our duty load, Hornady TAP.
Z
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Joined: Jun 2003
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Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Jun 2003
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It's done. works as well as an AR can shoot groups at 100 yards.
A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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